A solid essay and a great set of criteria. When I was a PM at Google, there were a couple other critical traits I liked to look for, though they were not simple yes-no criteria.

* How does this person deal with vast uncertainty? Are they excited? Scared? Is their first reaction to impose structure or are they comfortable with lack of structure? If it's the latter, can they meaningful convey confidence with the lack of structure?

* Can this person teach? Can they figure out how to take an abstract idea and articulate it cleanly? When someone doesn't get it, at what point do they fall back to utilizing authority? Are they good at listening closely to what someone is saying to them and framing an argument in their terms?